Looking for guidance on managing real-time changes from Redis in Express.js. I am in need of fresh data from Redis every time there is an update. Can someone provide a helpful example or solution for this?
Looking for guidance on managing real-time changes from Redis in Express.js. I am in need of fresh data from Redis every time there is an update. Can someone provide a helpful example or solution for this?
Redis offers support for pub/sub functionality. An example of using this feature with the Redis driver can be found here:
https://github.com/mranney/node_redis
To demonstrate how to notify Redis when a change is made, consider the following code snippet:
var redis = require("redis"),
client = redis.createClient();
client.set("key", "value", function() {
client.publish("notification channel", JSON.stringify({"key": "value"}));
});
Subsequently, you can implement the following code to listen for notifications:
var redis = require("redis"),
client = redis.createClient();
client.subscribe("notification channel");
client.on("message", function(channel, msg) {
if (channel === "notification channel") {
var obj = JSON.parse(msg);
// Respond to the notification here
}
});
Ensure that you trigger .publish each time you update Redis data.
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